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10 Things Must Be Known Before Buying a Chemical Pump



When you purchase a new fluid equipment, the manufacturer needs the user to provide a series of operating conditions. For example, when purchasing chemical pumps, you need to provide basic operating conditions such as head and capacity. Probably this is the common experience of lots of people, and it may make people feel a little troublesome, but because chemical pumps are specially designed for the special needs of the chemical industry, most of the chemicals are dangerous, so compared with the water pumps, there are of course more factors to consider before deciding on an appropriate chemical pump. There are mainly 10 things, which are items that manufacturers must confirm with customers first.

1. What Should Be Pumped?

First, must know what the chemical fluid to be transfered is. Since the characteristics of chemical fluids will directly affect the type and material of chemical pumps used, understanding the characteristics of chemical fluids is the most preliminary task for pump selection. The fluid properties include corrosiveness, temperature, viscosity, concentration, specific gravity and impurities.
For the relevant technical terms of the pump, there is a detailed explanation in this article: What are the considerations when choosing a pump? It can be read to understand more about this.

2. What Is the Amount of Fluid Will Be Pumped?

The capacity refers to the volume of fluid that the pump needs to deliver per unit time, and indicates the flow rate and amount of the fluid passing through the pump during delivery. It is usually denoted by the letter Q, the unit of measurement is: LPM, m³/h or m³/s. The amount of flow will affect the size of the pump and the diameter of the piping.

3. How Much Is the Working Pressure?

Working pressure is the force required to move fluid through the system. If the range of working pressure is too high or too low, the expected delivery effect cannot be achieved. Therefore, it is necessary to consider whether to use a chemical pump with good pressure resistance to meet the operating range of the system.

4. How High Is the Maximum Head?

The height to which the fluid needs to be moved, which means the vertical height from the fluid source surface to the final outlet, in m. The density of the transported liquid, the diameter of the impeller and the number of stages of the impeller will all affect the height of the head.

5. What Is the Connection Type?

Regarding how to connect and fix the pump and the pipeline, flanges, unions or hoses are usually used. In the application of medium and large pumps, the flange form is often used as the main connection method. Different types of chemical pumps are also equipped with flange types of different specifications.
To get more information of flange, please refer to the following three articles about flange.
Article1:What is a Flange? What are the types of flanges?
Article2:5 Types Commonly Used Flange Faces
Article3:Flange Standards (ANSI, JIS, DIN, GB)

6. What Is the Connected Motor Type?

Generally speaking, most pumps need to be connected with a motor and a power as the source of power for the pump (except for specific types of pumps, such as air-operated diaphragm pumps, etc.). When using it with a motor, you need to pay attention to whether there will be failures such as motor burnout. Depending on the application and working environment, the type and specification of the motor are also different.
More about motors:What are the considerations for motor selection?
What’s the Difference between Normal Motors, Inverter Duty Motors, and Explosion-Proof Motors?

7. What area is it used in?

When chemical pumps are used in the semiconductor industry, PCB industry, medicine and food industry, etc., when the cleanliness is in high demand, it is necessary to use pumps made of specific materials, such as stainless steel SUS316L; or in other special environmental conditions, such as using pumps located in coastal areas are prone to corrosion due to the extremely high salinity of seawater. Both pumps and motors require special coatings to prevent erosion by seawater or rain.
For applications such as chemical industry, semiconductor industry, wastewater treatment, energy and environmental protection, petrochemical industry, food industry, pharmaceutical industry, etc., PTCXPUMP is a reliable partner of domestic and foreign manufacturers, and can provide customized and safe magnetic drive pumps according to the operating environment.

8. How Often Will the Pump Be Operating?

Pumps that run continuously for long periods of time must be constructed of stronger materials to increase durability and extend their service life than pumps that are run only once in a while. When the pump is running without any fluid, it must also be ensured that dry running will not happen, otherwise the motor may burn out very quickly.

9. How to Protect the Pump?

In order to prevent pump failure, causing downtime and increasing operating costs, the pump is best use with a dry running protector. Thedry running protectoris used to monitor the current or power of the motor during operation. When the current is too high or too low, it will immediately issue an alarm or automatically shut down the motor. This function greatly reduces the probability of pump failure and maintenance costs. Based on safety and cost considerations, the optional dry running protector is also a machine that cannot be missed.

10. Should Maintenance Work Carried Out by Myself?

To ensure the longevity and efficiency of chemical pumps, proper maintenance and care is essential. Although self-maintenance can save a little cost, entrusting it to a manufacturer with good service, the maintenance of its professionals can guarantee the maintenance of product quality and operational efficiency.
Some ways you can extend pump life: Pump Maintenance Guide

PTCXPUMP provides you with chemical sealless magnetic drive pumps, which are widely used in a wide range of applications.Contact us and provide your requirements, we will assist you in accurate selection and providing the most appropriate pump. The maintenance problems after the products are used can also be entrusted to us with peace of mind. PTCXPUMP has the warehouse and repair factory, and can help you solve any product problems with instant and perfect after-sales service.

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